Table 2 Content of crystalline silica in raw materials – the Iksan Precious Metal Complex Jewelry Processing Company (1999)
Company | Raw material | Crystalline Silica Content (%) |
|---|---|---|
Company A | Cubic zirconia | ND |
Company B | Jade | ND |
Company C | ||
First Partner | Amethyst | 15.23% |
Second Partner | Cubic zirconia | ND |
Third Partner | Amethyst | 42.43% |
Company D | Amethyst | 8.25% |
Company E | Cubic zirconia | ND |
Company F | Cubic zirconia, Ruby, Sapphire | ND |
Company G | Cubic zirconia | ND |
Company H | White crystal | 56.66% |